[ petroleum; ] crude oil; [ hydrocarbon gases, namely, methane, ethane, propane, butane and pentane; ] natural gas; [ petroleum gas; compressed natural gas; liquefied natural gas; liquefied petroleum gas; coal bed gas; [ gas hydrates, namely, a crystalline solid containing solid-state water molecules and entrapped lower molecular weight gases; ] shale gas, namely, natural gas produced from subterranean shale formations; ] condensate, namely, a heavier fraction of natural gas liquid [ ; natural gas liquid, namely, a range of light hydrocarbons produced with natural gas that normally exist as liquids or are easily liquified; crude bitumen, namely, solid and semi-solid petroleum extracted from natural subterranean deposits in a raw unrefined state; asphaltene, namely, high molecular weight organic molecules naturally present in crude oil and tar sands; heavy oil; kerogen, namely, high molecular weight organic molecules naturally present in sedimentary rock that produce oil when heated; and fuel from crude oil; all of the above-listed goods being fuels ]

well drilling services [ ; technical consulting related to the installation of oil and gas equipment, control systems and machinery; cementing services for oil and gas wells; and oil sands mining ]

gas production services; oil production services [ ; technical consulting related to the manufacturing of oil and gas equipment, control systems and machinery; oil well prospecting, namely, perforating and spill treatment; oil refining services ]

exploration and searching for oil and gas [ ; technology consultation and research in the field of oil and gas exploration and production and well drilling; oil well testing; performing oil well diagnostics; technological consulting services in the field of alternative energy generation; technology consulting services in the field of alternative energy, namely, gasifying and combusting alternative fuels ]